Fastening for jewelry.



PATENT@ JAN. 3, 1905.

No. mm1;

J. N. PROVENZANO.

FASTENING FOR JEWELRY.

APPLICATION FILED JULY 25, 1904.

MMM.

No. 779,181.Y

Patented January 3, 1905.

PATENT EEicE.

JOSEPH N. PROVENZANO, OF NEW YORK, N. Y.

FASTEYNING FOR JEWELRY.

SPECIFICATION forming part of Letters Patent No. 779,181, dated January 3, 1905.

Application filed Juiy 25, 1904. serial No. 218,160.

To all whom/it may concern.-

Be it known that I JOSEPH N. PRovENzANo, a citizen of the United States, residing in the city of New York, borough of Manhattan, county and State of New York, have invented certain new and useful Improvements in Fastenings for Jewelry, of which the following is a specification sufficient to enable others skilled in the art to which the invention appertains to make and use the same.

My invention is designed to afford a simple and positive fastening for connecting the ends of a bracelet or chain, the parts of a sleeve, collar, badge, or other form of button, necklaces, key-rings, or other article of jewelry.

The invention consists in the construction and arrangement of parts hereinafter described and claimed specifically.

In the accompanying drawings, Figures 1 and 2 are elevations, taken at right angles to each other, of the male portion of the fastening. Fig. 3 is an elevation of the underside of same; Fig. 4, a section upon plane of line 4 4, Fig. 3. Fig. 5 is an elevation of the female portion of the fastening. Fig. 6 is an elevation of the inner side of the same; Fig. 7, a section upon plane of line 7 7, Fig. 6; Fig. 8, a similar view with the end of the centraliZing-stud broken away; Fig. 9, a section upon plane of line 9 9, Fig. 6. Fig. 10 is a central section of the parts coupled together. Fig. 11 is an elevation of the same. Fig. 12 is a section upon plane of line 12 12, Fig. 7.

The female part A is formed with a cylindrical socket-piece a, formed with an internal ange a', having the notch a2 and recess a3, the inner edges of the iiange a being inclined between the notch o2 and the recess a3 to form stationary cam-surfaces a4 for the purpose hereinafter set forth. The socketepiece has a rigid stud b extending axially with relation to its cylindrical portion.

The male portion O is formed with the hollow cylindrical shank 0, having the lateral A coiled spring s shoulder or projection c.

is inserted in the interior of the shank and is held therein by frictional contact.

In use the shank c of the male portion is applied to the end of the cylindrical socketpiece a, the stud b entering the end of the hollow shank c and guiding and centralizing the same. When the male portion is turned to bring the lateral shoulder into coincidence with the notch a2, the shank c is pressed inward against the resistance of the spring s acting upon the end of the stud b. When the shank is now turned axially, the lateral shoulder c' will be brought in contact with one or the other of the stationary cam or guide surfaces a4 and be thereby guided to the recess as, into which the said lateral shoulder will be forced by the spring s, thereby positively locking the parts together until the shoulder 0 is forcibly withdrawn from the recess co3 against the resistance of said spring s.

Thus constructed the male and female parts may be quickly and conveniently coupled or uncoupled by hand, while a perfect positive locking of the parts together is insured when desired.

What I claim as my invention, and desire tosecure by Letters Patent7 is# In a fastening of the character designated, the combination of the female part A, formed with the axial stud I), and cylindrical socket a, having the internal flange a', formed with the notch a2, and recess as, and with an inclined inner surface af, extending between said notch a2, and said recess a3, the male part O, formed with the hollow cylindrical shank c, having the lateral projection c', and the spiral spring s, arranged in the hollow cylindrical shank c, to bear against the end of the axial stud b, of the female part A, for the purpose and substantially as set forth.

JOSEPH N. PROVENZANO. Witnesses:

D. W. GARDNER, GEO. WM. MIATT. 

